I was still working on tweeking in my motor,well
i have a 850 dp that i got new and have been making it work on my 454 ,well it turns out its too much carb for the street , the guy who will be helping me tweek my motor in said the same thing that most people have said,too big ! well I'm going to find a 750 dp. sell / trade my 850 ((ebay/mortec) it eats up
big time gas just sitting at idle,and its time to
get it from running rich at higher rpms
dose sound about right :confused:

850s are not good street carbs even in a lite car. You will be much happier with a 750 unless you have a 7000 rpm 454.

I'd think the 850 would be just right once calibrated, heck a 350 will usually run stronger with a 750. JMO A friend of mine is running a 468 with a 292 hydraulic, ported 781's team G with a 1000 dominator, only 9.5-1 compression. He clicks off 11.2Et consistantly in his 79 Cutlass and still drives it on the street without problem. Don't the factory quadrajunks flow 850? Tune the one you have IMO :(

Robert an 850 is not to much carb for a 454,but for a car mostly driven on the street I would go with the 750dp or vs.You can get a holley 3310s at summit for $269 and that includes electric choke,and will get better milage than a dp carb. graemlins/waving.gif

Originally posted by JRS70LS5:
You can get a holley 3310s at summit for $269 and that includes electric choke,and will get better milage than a dp carbThat would be the perfect carb..they're available at Scoggin-Dickey for $180..little cheaper than Summit ;)